IBM Integrated 56K Modem (MDC-2)
This is a Modem Daughter Card (MDC) which is installed in a CDC (Communications Daughter Card) slot.
This slot is sometimes also refered to as a MDC (Mobile Daughter Card) slot.
IBM FRU PN: 93P4166, 93P4212, 91P7321
Also known (in IBM literature) as....
- Integrated 56K Modem
- MDC II Modem card
The Linux driver from SmartLink should work.
Latest version of this driver is 2.9.10 and supports both the 2.4 and 2.6 kernels